| // Copyright 2010 Google Inc. All Rights Reserved. |
| // Use of this source code is governed by an Apache-style license that can be |
| // found in the COPYING file. |
| // |
| // A wrapper around ZLib's CRC functions to put them in the rlz_lib namespace |
| // and use our types. |
| |
| #include "rlz/lib/assert.h" |
| #include "rlz/lib/crc32.h" |
| #include "rlz/lib/string_utils.h" |
| #include "third_party/zlib/zlib.h" |
| |
| namespace rlz_lib { |
| |
| int Crc32(const unsigned char* buf, int length) { |
| return crc32(0L, buf, length); |
| } |
| |
| bool Crc32(const char* text, int* crc) { |
| if (!crc) { |
| ASSERT_STRING("Crc32: crc is NULL."); |
| return false; |
| } |
| |
| *crc = 0; |
| for (int i = 0; text[i]; i++) { |
| if (!IsAscii(text[i])) |
| return false; |
| |
| *crc = crc32(*crc, reinterpret_cast<const unsigned char*>(text + i), 1); |
| } |
| |
| return true; |
| } |
| |
| } // namespace rlz_lib |
